A 100 W sodium lamp radiates energy uniformly in all directions. The lamp is located at…
Physics · Class 12 · CBSE — Dual Nature of Radiation & Matter
A 100 W sodium lamp radiates energy uniformly in all directions. The lamp is located at the centre of a large sphere that absorbs all the sodium light which is incident on it. The wavelength of the sodium light is 589 nm. The number of photons delivered per second to the sphere is
- 3 × 1015
- 3 × 1010
- 3 × 1020
- 3 × 1019
Answer
(C) 3 × 10 20
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